Instyle Furnishing&rsquo;s 10&rdquo; Enso Sleep Systems Hawthorn Memory Foam Mattress Available in Twin, Full, Queen, and King (Queen) Quilt Package: Tencel, poly knit removable zippered cover. Non-skid protective dust cover. 3.5 HD Polyurethane Base Foam: Durable and supportive for long lasting comfort. 3 Tri-Tech Memory Foam: Combines 3 formulations of Enso memory foams for greater pressure relieving comfort and support. Available in Twin, Full, Queen, and King.